SCCA® Solo classing — unofficial guide
What autocross class is a Lexus IS (non-F)?
DSStreetDSTStreet Touring
A stock 2006–2020 Lexus IS (non-F) runs in DS (Street) under the 2026 SCCA Solo Rules. Built to Street Touring allowances (within DST tire and wheel limits), it runs DST.
Class by preparation level
| Stock (Street) | DS |
| Street Touring | DST |
| Street Prepared | — |
| Street Modified | SM |
| Prepared | — |
A “—” means the car isn’t listed at that level; a build lands in the least-prepared category its modifications allow.
Also eligible for
XA/XBXtreme Street
From the 2026 rulebook (Appendix A)
Street: 'IS (all excl. IS-F) (2006-20)' = DS. ST: 'IS 250 / IS 300 / IS 350' = DST. IS-F = BST; IS 500 = FS.
Other DS cars
Unofficial guidance verified against the 2026 SCCA® Solo® Rules — always confirm against the current rulebook before competing. Classing data cites the exact Appendix A wording it relies on. Spot an error? Report it on GitHub.